Image lens assembly system

ABSTRACT

An image lens assembly system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with negative refractive power has a convex object-side surface. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has refractive power. The sixth lens element with refractive power is made of plastic material, wherein at least one surface of the sixth lens element is aspheric. The seventh lens element with refractive power made of plastic material has a concave image-side surface changing from concave in a paraxial region to convex in a peripheral region, and at least one surface thereof is aspheric.

RELATED APPLICATIONS

The present application is a continuation of the application Ser. No.14/666,321, filed on Mar. 24, 2015, which is a continuation of theapplication Ser. No. 14/574,464, filed on Dec. 18, 2014, which is acontinuation of the application Ser. No. 14/253,857, filed on Apr. 15,2014, which is a continuation of the application Ser. No. 13/671,540,filed on Nov. 7, 2012, and claims priority under 35 U.S.C. 119(e) toTaiwan application serial number 101129216, filed on Aug. 13, 2012, theentire contents of which are hereby incorporated herein by reference.

BACKGROUND

Technical Field

The present invention relates to an image lens assembly system. Moreparticularly, the present invention relates to a compact image lensassembly system applicable to electronic products.

Description of Related Art

In recent years, with the popularity of mobile products with camerafunctionalities, the demand of miniaturized optical lens systems isincreasing. The sensor of a conventional photographing camera istypically a CCD (Charge-Coupled Device) or a CMOS (ComplementaryMetal-Oxide-Semiconductor) sensor. As the advanced semiconductormanufacturing technologies have allowed the pixel size of sensors to bereduced and compact optical lens systems have gradually evolved towardthe field of higher megapixels, there is an increasing demand forcompact optical lens systems featuring better image quality.

A conventional compact optical lens system employed in a portableelectronic product mainly adopts a five-element lens structure such asthe one disclosed in U.S. Pat. No. 8,000,031. Due to the popularity ofmobile products with high-end specifications, such as smart phones andPDAs (Personal Digital Assistants), the pixel and image-qualityrequirements of the compact optical lens system have increased rapidly.However, the conventional five-element lens structure cannot satisfy therequirements of the compact optical lens system.

Although other conventional optical lens system with six-element lensstructure is disclosed, such as U.S. Publication No. 2012/0170142.However, the two lens elements of the optical lens system closest to theobject side are not configured as one with negative refractive power andthe other with greater positive refractive power, so that the back focallength of optical lens system cannot be reduced. As a result, when thefield of view of the optical lens system is increased, the total tracklength thereof is getting hard to be maintained, and the aberration andthe distortion thereof cannot be eliminated by the mutual compensatingeffect generated from the aforementioned two lens elements.

SUMMARY

According to one aspect of the present disclosure, an image lensassembly system includes, in order from an object side to an image side,a first lens element, a second lens element, a third lens element, afourth lens element, a fifth lens element, a sixth lens element and aseventh lens element. The first lens element with negative refractivepower has a convex object-side surface. The second lens element haspositive refractive power. The third lens element has refractive power.The fourth lens element has refractive power. The fifth lens element hasrefractive power. The sixth lens element with refractive power is madeof plastic material, wherein at least one of an object-side surface andan image-side surface of the sixth lens element is aspheric. The seventhlens element with refractive power is made of plastic material and has aconcave image-side surface, wherein the image-side surface of theseventh lens element changes from concave in a paraxial region thereofto convex in a peripheral region thereof, and at least one of anobject-side surface and the image-side surface thereof is aspheric. Asum of central thicknesses from the first through seventh lens elementsis ΣCT, an axial distance between the object-side surface of the firstlens element and the image-side surface of the seventh lens element isTd, and the following relationship is satisfied:0.60<ΣCT/Td<0.90.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure can be more fully understood by reading the followingdetailed description of the embodiments, with reference made to theaccompanying drawings as follows:

FIG. 1 is a schematic view of an image lens assembly system according tothe 1st embodiment of the present disclosure;

FIG. 2 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 1stembodiment;

FIG. 3 is a schematic view of an image lens assembly system according tothe 2nd embodiment of the present disclosure;

FIG. 4 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 2ndembodiment;

FIG. 5 is a schematic view of an image lens assembly system according tothe 3rd embodiment of the present disclosure;

FIG. 6 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 3rdembodiment;

FIG. 7 is a schematic view of an image lens assembly system according tothe 4th embodiment of the present disclosure;

FIG. 8 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 4thembodiment;

FIG. 9 is a schematic view of an image lens assembly system according tothe 5th embodiment of the present disclosure;

FIG. 10 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 5thembodiment;

FIG. 11 is a schematic view of an image lens assembly system accordingto the 6th embodiment of the present disclosure;

FIG. 12 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 6thembodiment;

FIG. 13 is a schematic view of an image lens assembly system accordingto the 7th embodiment of the present disclosure;

FIG. 14 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 7thembodiment;

FIG. 15 is a schematic view of an image lens assembly system accordingto the 8th embodiment of the present disclosure;

FIG. 16 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 8thembodiment;

FIG. 17 is a schematic view of an image lens assembly system accordingto the 9th embodiment of the present disclosure;

FIG. 18 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 9thembodiment;

FIG. 19 is a schematic view of an image lens assembly system accordingto the 10th embodiment of the present disclosure; and

FIG. 20 shows spherical aberration curves, astigmatic field curves and adistortion curve of the image lens assembly system according to the 10thembodiment.

DETAILED DESCRIPTION

An image lens assembly system includes, in order from an object side toan image side, a first lens element, a second lens element, a third lenselement, a fourth lens element, a fifth lens element, a sixth lenselement and a seventh lens element.

The first lens element with negative refractive power has a convexobject-side surface, so that the field of view of the image lensassembly system can be increased by adjusting the negative refractivepower and the curvature of the object-side surface of the first lenselement.

The second lens element has positive refractive power, and therefractive power thereof is greater than the refractive power of thefirst lens element, so that the excessive back focal length of the imagelens assembly system caused by the first lens element with negativerefractive power can be effectively reduced. The second lens element canhave a convex object-side surface, so that the aberration and thedistortion of the image lens assembly system can be corrected.

The fourth lens element can have positive refractive power, so that thesensitivity of the image lens assembly system can be reduced.

The fifth lens element with refractive power can have a concaveobject-side surface and a convex image-side surface. Therefore, theastigmatism of the image lens assembly system can be corrected, and theresolving power thereof can be enhanced for obtaining high imagequality.

The sixth lens element with positive refractive power is made of plasticmaterial, and can have a convex image-side surface, wherein at least oneof an object-side surface and the image-side surface of the sixth lenselement is aspheric. Therefore, the high order aberration of the imagelens assembly system can be corrected, and the resolving power thereofcan be enhanced for obtaining high image quality.

The seventh lens element with negative refractive power is made ofplastic material, and has a concave image-side surface, wherein theimage-side surface changes from concave at a paraxial region to convexat a peripheral region, and at least one of an object-side surface andthe image-side surface thereof is aspheric. Therefore, the principalpoint of the image lens assembly system can be positioned away from theimage plane, and the back focal length thereof can be reduced so as tomaintain the compact size of the image lens assembly system.Furthermore, the incident angle of the off-axis field on an image sensorcan be effectively reduced for increasing the photosensing efficiency ofthe image sensor, and the aberration of the off-axis field can befurther corrected.

When a sum of central thicknesses from the first through seventh lenselements is ΣCT, and an axial distance between the object-side surfaceof the first lens element and the image-side surface of the seventh lenselement is Td, the following relationship is satisfied:0.60<ΣCT/Td<0.90.

Therefore, the thicknesses of the lens elements of the image lensassembly system are proper for the manufacturing and the assembling ofthe lens elements, so that the yield rate of the lens elements isimproved, and the total track length of the image lens assembly systemcan be reduced as well.

ΣCT and Td can preferably satisfy the following relationship:0.70≦ΣCT/Td<0.90.

When a focal length of the image lens assembly system is f, and acomposite focal length of the first lens element and the second lenselement is f12, the following relationship is satisfied:0.1<f/f12<1.8.

Therefore, the aberration and the distortion of the image lens assemblysystem can be corrected, and the back focal length thereof can bereduced so as to maintain the compact size of the image lens assemblysystem.

f and f12 can preferably satisfy the following relationship:0.50<f/f12<1.35.

When the axial distance between the object-side surface of the firstlens element and the image-side surface of the seventh lens element isTd, the following relationship is satisfied:3.2 mm<Td<7.0 mm.

Therefore, the compact size of the image lens assembly system can bemaintained.

When a curvature radius of an object-side surface of the fifth lenselement is R9, and a curvature radius of an image-side surface of thefifth lens element is R10, the following relationship is satisfied:|(R9−R10)/(R9+R10)|<0.35.

Therefore, the astigmatism of the image lens assembly system can becorrected by adjusting the curvature of the surfaces of the fifth lenselement.

When an Abbe number of the fifth lens element is V5, and an Abbe numberof the sixth lens element is V6, the following relationship issatisfied:0.25<V5/V6<0.60.

Therefore, the chromatic aberration of the image lens assembly systemcan be corrected.

When the focal length of the image lens assembly system is f, and afocal length of the seventh lens element is f7, the followingrelationship is satisfied:−0.70<f7/f<−0.30.

Therefore, the principal point of the image lens assembly system can bepositioned away from the image plane, and the back focal length of theimage lens assembly system can be reduced so as to maintain the compactsize of the image lens assembly system.

When a curvature radius of the object-side surface of the seventh lenselement is R13, and a curvature radius of the image-side surface of theseventh lens element is R14, the following relationship is satisfied:0<R14/|R13|<0.5.

Therefore, the negative refractive power of the seventh lens element isproper by adjusting the curvature radius of the object-side surface andthe image-side surface thereof, so that the principal point of the imagelens assembly system can be positioned away from the image plane, andthe back focal length of the image lens assembly system can be reducedfor maintaining the compact size of the image lens assembly system.

When a maximal field of view of the image lens assembly system is FOV,the following relationship is satisfied:70 degrees<FOV<100 degrees.

Therefore, a proper field of view is provided. When the field of view isoverly enlarged, an excessive distortion of the peripheral region of theimage is generated accordingly. When the field of view is too small, thephotographing range is limited thereby. Therefore, the desiredphotographing range can be obtained while minimizing the imagedistortion with the proper field of view.

When the focal length of the image lens assembly system is f, and anaxial distance between an image-side surface of the first lens elementand the object-side surface of the second lens element is T12, thefollowing relationship is satisfied:0<T12/f<0.1.

Therefore, the assembling yield rate of the image lens assembly systemis increased.

When the focal length of the image lens assembly system is f, a focallength of the second lens element is f2, and a focal length of thefourth lens element is f4, the following relationship is satisfied:1.4<f/f2+f/f4<2.6.

Therefore, the back focal length of the image lens assembly system canbe reduced, the aberration and the distortion of the image lens assemblysystem can be corrected, and the sensitivity of the image lens assemblysystem can also be reduced.

When the focal length of the image lens assembly system is f, a focallength of the first lens element is f1, the focal length of the secondlens element is f2, a focal length of the third lens element is f3, thefocal length of the fourth lens element is f4, and a focal length of thefifth lens element is f5, the following relationship is satisfied:|f/f2|>f/f1,|f/f2|>f/f3,|f/f2|>f/f4, and |f/f2|>f/f5.

Therefore, the second lens element has the greatest refractive power forreducing the back focal length of the image lens assembly system formaintaining the compact size of the image lens assembly system.

When an axial distance between the object-side surface of the first lenselement and an image plane is TTL, and a maximum image height of theimage lens assembly system is ImgH, the following relationship issatisfied:TTL/ImgH<1.85.

Therefore, the compact size of the image lens assembly system can bemaintained for applying to thin and portable electronics.

According to the image lens assembly system of the present disclosure,the lens elements thereof can be made of plastic or glass material. Whenthe lens elements are made of glass material, the distribution of therefractive power of the image lens assembly system may be more flexibleto design. When the lens elements are made of plastic material, themanufacturing costs can be effectively reduced. Furthermore, thesurfaces of each lens element can be aspheric, so that it is easier tomake the surfaces into non-spherical shapes. As a result, morecontrollable variables are obtained, and the aberration is reduced, aswell as the number of required lens elements can be reduced whileconstructing an optical system. Therefore, the total track length of theimage lens assembly system can also be reduced.

According to the image lens assembly system of the present disclosure,each of an object-side surface and an image-side surface of every lenselement has a paraxial region and a peripheral region. The paraxialregion refers to the region of the surface where light rays travel closeto an optical axis and the peripheral region refers to the region of thesurface where light rays travel away from the optical axis.Particularly, when a lens element has a convex surface, it indicatesthat the paraxial region of the surface is convex; when the lens elementhas a concave surface, it indicates that the paraxial region of thesurface is concave.

According to the image lens assembly system of the present disclosure,the image lens assembly system can include at least one stop, such as anaperture stop, a glare stop, or a field stop, etc. Said glare stop orsaid field stop is allocated for reducing stray light while retaininghigh image quality. Furthermore, an aperture stop can be configured as afront stop or a middle stop. A front stop disposed between an object andthe first lens element provides a longer distance from an exit pupil ofthe system to an image plane and thereby the generated telecentriceffect improves the image-sensing efficiency of an image sensor. Amiddle stop disposed between the first lens element and the image planeis favorable for enlarging the field of view of the image lens assemblysystem and thereby provides a wider field of view for the same.

According to the image lens assembly system of the present disclosure,the image lens assembly system is featured with good correcting abilityand high image quality, and can be applied to 3D (three-dimensional)image capturing applications, in products such as digital cameras,mobile devices and tablets.

According to the above description of the present disclosure, thefollowing 1st-10th specific embodiments are provided for furtherexplanation.

1st Embodiment

FIG. 1 is a schematic view of an image lens assembly system according tothe 1st embodiment of the present disclosure. FIG. 2 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 1st embodiment. In FIG. 1,the image lens assembly system includes, in order from an object side toan image side, a first lens element 110, an aperture stop 100, a secondlens element 120, a third lens element 130, a fourth lens element 140, afifth lens element 150, a sixth lens element 160, a seventh lens element170, an IR-cut filter 190, an image plane 180, and an image sensor 105.

The first lens element 110 made of plastic material has negativerefractive power. The first lens element 110 has a convex object-sidesurface 111 and a concave image-side surface 112, and both theobject-side surface 111 and the image-side surface 112 thereof areaspheric.

The second lens element 120 made of plastic material has positiverefractive power. The second lens element 120 has a convex object-sidesurface 121 and a concave image-side surface 122, and both theobject-side surface 121 and the image-side surface 122 thereof areaspheric.

The third lens element 130 made of plastic material has negativerefractive power. The third lens element 130 has a convex object-sidesurface 131 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 132 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 131 and the image-side surface 132 of the thirdlens element 130 are aspheric.

The fourth lens element 140 made of plastic material has positiverefractive power. The fourth lens element 140 has a convex object-sidesurface 141 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 142 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 141 and the image-side surface 142 of the fourthlens element 140 are aspheric.

The fifth lens element 150 made of plastic material has negativerefractive power. The fifth lens element 150 has a concave object-sidesurface 151 and a convex image-side surface 152, and both theobject-side surface 151 and the image-side surface 152 thereof areaspheric.

The sixth lens element 160 made of plastic material has positiverefractive power. The sixth lens element 160 has a concave object-sidesurface 161 and a convex image-side surface 162, and both theobject-side surface 161 and the image-side surface 162 thereof areaspheric.

The seventh lens element 170 made of plastic material has negativerefractive power. The seventh lens element 170 has a convex object-sidesurface 171, and has a concave image-side surface 172 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 171 and the image-side surface 172 of the seventhlens element 170 are aspheric.

The IR-cut filter 190 made of glass material is located between theseventh lens element 170 and the image plane 180, and will not affect afocal length of the image lens assembly system.

The equation of the aspheric surface profiles of the aforementioned lenselements of the 1st embodiment is expressed as follows:

${{X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right) \times \left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}\;{({Ai}) \times \left( Y^{\prime} \right)}}}},$wherein,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the distance from the point on the curve of the aspheric surface tothe optical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

In the image lens assembly system according to the 1st embodiment, whenthe focal length of the image lens assembly system is f, an f-number ofthe image lens assembly system is Fno, and half of a maximal field ofview of the image lens assembly system is HFOV, these parameters havethe following values:

f=4.10 mm;

Fno=2.00; and

HFOV=41.2 degrees.

In the image lens assembly system according to the 1st embodiment, whenan Abbe number of the fifth lens element 150 is V5, and an Abbe numberof the sixth lens element 160 is V6, the following relationship issatisfied:V5/V6=0.42.

In the image lens assembly system according to the 1st embodiment, whenthe focal length of the image lens assembly system is f, and an axialdistance between the image-side surface 112 of the first lens element110 and the object-side surface 121 of the second lens element 120 isT12, the following relationship is satisfied:T12/f=0.024.

In the image lens assembly system according to the 1st embodiment, whena curvature radius of the object-side surface 151 of the fifth lenselement 150 is R9, and a curvature radius of the image-side surface 152of the fifth lens element 150 is R10, the following relationship issatisfied:|(R9−R10)(R9+R10)|=0.24.

In the image lens assembly system according to the 1st embodiment, whena curvature radius of the object-side surface 171 of the seventh lenselement 170 is R13, and a curvature radius of the image-side surface 172of the seventh lens element 170 is R14, the following relationship issatisfied:R14/|R13|=0.19.

In the image lens assembly system according to the 1st embodiment, whenthe focal length of the image lens assembly system is f, and a focallength of the seventh lens element 170 is f7, the following relationshipis satisfied:f7/f=−0.65.

In the image lens assembly system according to the 1st embodiment, whenthe focal length of the image lens assembly system is f, and a compositefocal length of the first lens element 110 and the second lens element120 is f12, the following relationship is satisfied:f1/f12=0.71.

In the image lens assembly system according to the 1st embodiment, whenthe focal length of the image lens assembly system is f, a focal lengthof the second lens element 120 is f2, and a focal length of the fourthlens element 140 is f4, the following relationship is satisfied:f/f2+f/f4=1.75.

In the image lens assembly system according to the 1st embodiment, whenan axial distance between the object-side surface 111 of the first lenselement 110 and the image-side surface 172 of the seventh lens element170 is Td, the parameter has the following value:Td=4.892 mm.

In the image lens assembly system according to the 1st embodiment, whena sum of central thicknesses from the first 110 through seventh 170 lenselements is ΣCT, and the axial distance between the object-side surface111 of the first lens element 110 and the image-side surface 172 of theseventh lens element 170 is Td, the following relationship is satisfied:ΣCT/Td=0.78.

In the image lens assembly system according to the 1st embodiment, whenan axial distance between the object-side surface 111 of the first lenselement 110 and the image plane 180 is TTL, and a maximum image heightof the image lens assembly system is ImgH which here is a half of thediagonal length of the photosensitive area of the image sensor 105 onthe image plane 180, the following relationship is satisfied:TTL/ImgH=1.66.

In the image lens assembly system according to the 1st embodiment, whenthe maximal field of view of the image lens assembly system is FOV, theparameter has the following value:FOV=82.4 degrees.

The detailed optical data of the 1st embodiment are shown in Table 1,and the aspheric surface data are shown in Table 2 below.

TABLE 1 1st Embodiment f = 4.10 mm, Fno = 2.00, HFOV = 41.2 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 3.790200 (ASP) 0.250 Plastic 1.640 23.3−26.92 2 3.026600 (ASP) 0.263 3 Ape. Stop Plano −0.164 4 Lens 2 2.253630(ASP) 0.518 Plastic 1.544 55.9 4.63 5 19.505900 (ASP) 0.252 6 Lens 33.612500 (ASP) 0.347 Plastic 1.640 23.3 −12.97 7 2.422750 (ASP) 0.324 8Lens 4 12.756700 (ASP) 0.687 Plastic 1.544 55.9 4.72 9 −3.157000 (ASP)0.239 10 Lens 5 −1.193500 (ASP) 0.325 Plastic 1.640 23.3 −5.71 11−1.961460 (ASP) 0.040 12 Lens 6 −29.239800 (ASP) 0.904 Plastic 1.54455.9 2.64 13 −1.383730 (ASP) 0.120 14 Lens 7 5.726300 (ASP) 0.787Plastic 1.544 55.9 −2.68 15 1.106930 (ASP) 0.800 16 IR-cut filter Plano0.200 Glass 1.516 64.1 — 17 Plano 0.391 18 Image Plano — — Note:Reference wavelength (d-line) is 587.6 nm.

TABLE 2 Aspheric Coefficients Surface # 1 2 4 5 6 k = −9.79391E+00−1.38249E+01 −5.08567E+00 −1.00000E+00 −1.19248E+01 A4 = −9.62346E−03−2.47259E−02 −1.32963E−02 −4.51199E−02 −1.09132E−01 A6 = 1.17735E−031.11101E−02 5.66935E−02 1.16181E−02 7.18362E−02 A8 = −3.13554E−03−7.61782E−03 −7.01354E−02 8.75234E−03 −8.03921E−02 A10 = 1.22476E−034.48759E−03 3.75293E−02 −2.76377E−02 4.48995E−02 A12 = 4.03615E−041.39428E−03 7.43850E−03 1.62663E−02 −9.55288E−03 A14 = −8.65285E−03−3.05263E−03 −4.34520E−03 Surface # 7 8 9 10 11 k = −2.90099E+00−1.00000E+00 −4.89645E+00 −1.57567E+00 −1.41741E+00 A4 = −8.79236E−02−3.03992E−02 −1.36966E−02 1.30143E−01 4.18466E−02 A6 = 4.98763E−02−1.21714E−02 −2.73105E−02 −1.44369E−01 −4.44469E−02 A8 = −2.61518E−029.61434E−03 5.51112E−03 9.38999E−02 2.77053E−02 A10 = 9.31836E−03−3.67113E−03 5.25437E−04 −3.72021E−02 −9.83514E−03 A12 = −4.22028E−03−1.42105E−03 2.29360E−04 1.16608E−02 2.53503E−03 A14 = 3.14527E−046.83756E−04 −4.59259E−06 −1.96321E−03 −3.03950E−04 Surface # 12 13 14 15k = −1.00000E+00 −4.62220E+00 −4.85293E+00 −4.73581E+00 A4 =−4.92718E−02 −6.97143E−03 −5.14983E−02 −2.34065E−02 A6 = 2.66614E−02−2.64015E−03 7.02809E−03 3.81829E−03 A8 = −6.87108E−03 8.80797E−03−4.86238E−04 −5.08531E−04 A10 = 7.77709E−04 −3.34439E−03 2.53995E−054.10183E−05 A12 = −6.17588E−06 5.23018E−04 3.74772E−06 −2.66767E−06 A14= −5.34594E−06 −3.07705E−05 −4.98328E−07 9.29312E−08

In Table 1, the curvature radius, the thickness and the focal length areshown in millimeters (mm). Surface numbers 0-18 represent the surfacessequentially arranged from the object-side to the image-side along theoptical axis. In Table 2, k represents the conic coefficient of theequation of the aspheric surface profiles. A1-A14 represent the asphericcoefficients ranging from the 1st order to the 14th order. Thisinformation related to Table 1 and Table 2 applies also to the Tablesfor the remaining embodiments, and so an explanation in this regard willnot be provided again.

2nd Embodiment

FIG. 3 is a schematic view of an image lens assembly system according tothe 2nd embodiment of the present disclosure. FIG. 4 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 2nd embodiment. In FIG. 3,the image lens assembly system includes, in order from an object side toan image side, a first lens element 210, an aperture stop 200, a secondlens element 220, a third lens element 230, a fourth lens element 240, afifth lens element 250, a sixth lens element 260, a seventh lens element270, an IR-cut filter 290, an image plane 280, and an image sensor 205.

The first lens element 210 made of plastic material has negativerefractive power. The first lens element 210 has a convex object-sidesurface 211 and a concave image-side surface 212, and both theobject-side surface 211 and the image-side surface 212 thereof areaspheric.

The second lens element 220 made of plastic material has positiverefractive power. The second lens element 220 has a convex object-sidesurface 221 and a concave image-side surface 222, and both theobject-side surface 221 and the image-side surface 222 thereof areaspheric.

The third lens element 230 made of plastic material has negativerefractive power. The third lens element 230 has a convex object-sidesurface 231 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 232 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 231 and the image-side surface 232 of the thirdlens element 230 are aspheric.

The fourth lens element 240 made of plastic material has positiverefractive power. The fourth lens element 240 has a convex object-sidesurface 241 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 242 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 241 and the image-side surface 242 of the fourthlens element 240 are aspheric.

The fifth lens element 250 made of plastic material has negativerefractive power. The fifth lens element 250 has a concave object-sidesurface 251 and a convex image-side surface 252, and both theobject-side surface 251 and the image-side surface 252 thereof areaspheric.

The sixth lens element 260 made of plastic material has positiverefractive power. The sixth lens element 260 has a convex object-sidesurface 261 and a convex image-side surface 262, and both theobject-side surface 261 and the image-side surface 262 thereof areaspheric.

The seventh lens element 270 made of plastic material has negativerefractive power. The seventh lens element 270 has a concave object-sidesurface 271, and has a concave image-side surface 272 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 271 and the image-side surface 272 of the seventhlens element 270 are aspheric.

The IR-cut filter 290 made of glass material is located between theseventh lens element 270 and the image plane 280, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 2nd embodiment are shown in Table 3,and the aspheric surface data are shown in Table 4 below.

TABLE 3 2nd Embodiment f = 4.34 mm, Fno = 2.00, HFOV = 39.9 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 5.000400 (ASP) 0.267 Plastic 1.640 23.3−15.95 2 3.286300 (ASP) 0.262 3 Ape. Stop Plano −0.212 4 Lens 2 2.085680(ASP) 0.605 Plastic 1.544 55.9 4.15 5 24.189600 (ASP) 0.225 6 Lens 32.338000 (ASP) 0.270 Plastic 1.640 23.3 −17.88 7 1.853790 (ASP) 0.430 8Lens 4 10.370200 (ASP) 0.669 Plastic 1.544 55.9 5.62 9 −4.239600 (ASP)0.343 10 Lens 5 −1.123950 (ASP) 0.312 Plastic 1.640 23.3 −5.72 11−1.797230 (ASP) 0.050 12 Lens 6 6.692000 (ASP) 0.591 Plastic 1.535 56.32.65 13 −1.743020 (ASP) 0.208 14 Lens 7 −8.571200 (ASP) 0.870 Plastic1.535 56.3 −2.47 15 1.614740 (ASP) 0.700 16 IR-cut filter Plano 0.200Glass 1.516 64.1 — 17 Plano 0.312 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 4 Aspheric Coefficients Surface # 1 2 4 5 6 k = −1.88822E+01−1.99587E+01 −3.39052E+00 −1.00000E+00 −3.38341E+00 A4 = −2.05662E−02−3.06678E−02 −1.19377E−02 −2.19227E−02 −1.18247E−01 A6 = 3.33322E−031.54661E−02 6.25126E−02 2.52136E−02 7.25706E−02 A8 = −6.92096E−04−7.82046E−03 −5.68640E−02 −8.03234E−03 −6.57740E−02 A10 = 1.46409E−035.58844E−03 2.94485E−02 −2.66862E−02 3.75162E−02 A12 = −3.52848E−04−1.19318E−03 −5.33189E−03 2.45491E−02 −1.74387E−02 A14 = −1.19682E−03−7.62808E−03 3.17469E−03 Surface # 7 8 9 10 11 k = −3.23623E+00−1.00000E+00 −3.20247E−01 −1.69142E+00 −1.28637E+00 A4 = −7.87347E−02−2.63338E−02 −2.11376E−02 1.27414E−01 4.38410E−02 A6 = 4.92939E−02−1.03501E−02 −2.07430E−02 −1.46717E−01 −4.33653E−02 A8 = −2.91904E−026.93688E−03 3.79361E−03 9.27011E−02 2.70102E−02 A10 = 1.00812E−02−3.52315E−03 −2.46990E−04 −3.75321E−02 −9.99710E−03 A12 = −3.33547E−03−8.44741E−04 1.50710E−04 1.17194E−02 2.52409E−03 A14 = 5.16458E−044.91546E−04 1.92558E−04 −1.81681E−03 −2.76705E−04 Surface # 12 13 14 15k = −1.00000E+00 −7.19242E+00 −1.89184E+01 −7.67113E+00 A4 =−8.75369E−02 −1.58920E−02 −4.40176E−02 −2.15024E−02 A6 = 2.92389E−02−2.36127E−03 8.86032E−03 3.48346E−03 A8 = −7.75804E−03 8.86321E−03−4.08014E−04 −5.16814E−04 A10 = 7.24668E−04 −3.32322E−03 3.70251E−064.48650E−05 A12 = 4.83313E−05 5.24353E−04 7.68168E−07 −3.00049E−06 A14 =−5.83671E−06 −3.18620E−05 −3.39695E−07 1.09430E−07

In the image lens assembly system according to the 2nd embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 2nd embodiment. Moreover,these parameters can be calculated from Table 3 and Table 4 as thefollowing values and satisfy the following relationships:

f (mm) 4.34 f7/f −0.57 Fno 2.00 f/f12 0.75 HFOV (deg.) 39.9 f/f2 + f/f41.82 V5/V6 0.41 Td (mm) 4.890 T12/f 0.012 ΣCT/Td 0.73 |(R9 − R10)/(R9 +R10)| 0.23 TTL/ImgH 1.61 R14/|R13| 0.19 FOV (deg.) 79.8

3rd Embodiment

FIG. 5 is a schematic view of an image lens assembly system according tothe 3rd embodiment of the present disclosure. FIG. 6 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 3rd embodiment. In FIG. 5,the image lens assembly system includes, in order from an object side toan image side, a first lens element 310, an aperture stop 300, a secondlens element 320, a third lens element 330, a fourth lens element 340, afifth lens element 350, a sixth lens element 360, a seventh lens element370, an IR-cut filter 390, an image plane 380, and an image sensor 305.

The first lens element 310 made of plastic material has negativerefractive power. The first lens element 310 has a convex object-sidesurface 311 and a concave image-side surface 312, and both theobject-side surface 311 and the image-side surface 312 thereof areaspheric.

The second lens element 320 made of plastic material has positiverefractive power. The second lens element 320 has a convex object-sidesurface 321 and a concave image-side surface 322, and both theobject-side surface 321 and the image-side surface 322 thereof areaspheric.

The third lens element 330 made of plastic material has negativerefractive power. The third lens element 330 has a convex object-sidesurface 331 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 332 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 331 and the image-side surface 332 of the thirdlens element 330 are aspheric.

The fourth lens element 340 made of plastic material has positiverefractive power. The fourth lens element 340 has a concave object-sidesurface 341 changing from concave at a paraxial region to convex at aperipheral region, and has a convex image-side surface 342 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 341 and the image-side surface 342 of the fourthlens element 340 are aspheric.

The fifth lens element 350 made of plastic material has negativerefractive power. The fifth lens element 350 has a concave object-sidesurface 351 and a convex image-side surface 352, and both theobject-side surface 351 and the image-side surface 352 thereof areaspheric.

The sixth lens element 360 made of plastic material has positiverefractive power. The sixth lens element 360 has a convex object-sidesurface 361 and a convex image-side surface 362, and both theobject-side surface 361 and the image-side surface 362 thereof areaspheric.

The seventh lens element 370 made of plastic material has negativerefractive power. The seventh lens element 370 has a planar object-sidesurface 371, and has a concave image-side surface 372 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 371 and the image-side surface 372 of the seventhlens element 370 are aspheric.

The IR-cut filter 390 made of glass material is located between theseventh lens element 370 and the image plane 380, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 3rd embodiment are shown in Table 5,and the aspheric surface data are shown in Table 6 below.

TABLE 5 3rd Embodiment f = 3.24 mm, Fno = 2.20, HFOV = 42.4 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 2.894680 (ASP) 0.338 Plastic 1.640 23.3−57.09 2 2.559930 (ASP) 0.216 3 Ape. Stop Plano −0.102 4 Lens 2 1.985760(ASP) 0.411 Plastic 1.544 55.9 3.89 5 29.337600 (ASP) 0.110 6 Lens 34.409400 (ASP) 0.240 Plastic 1.650 21.4 −13.12 7 2.843750 (ASP) 0.217 8Lens 4 −35.383200 (ASP) 0.476 Plastic 1.544 55.9 5.38 9 −2.718940 (ASP)0.287 10 Lens 5 −0.814300 (ASP) 0.283 Plastic 1.650 21.4 −4.43 11−1.291360 (ASP) 0.030 12 Lens 6 2.900410 (ASP) 0.671 Plastic 1.544 55.91.78 13 −1.335940 (ASP) 0.175 14 Lens 7 ∞ (ASP) 0.481 Plastic 1.535 56.3−1.80 15 0.964670 (ASP) 0.600 16 IR-cut filter Plano 0.200 Glass 1.51664.1 — 17 Plano 0.342 18 Image Plano — Note: Reference wavelength(d-line) is 587.6 nm.

TABLE 6 Aspheric Coefficients Surface # 1 2 4 5 6 k = −6.44620E+00−1.03793E+01 −5.08519E+00 2.67765E+00 −3.14294E+01 A4 = −1.56694E−02−5.41895E−02 −2.85410E−02 −1.46250E−01 −2.64687E−01 A6 = 8.62105E−043.05195E−02 2.29569E−01 5.73111E−02 3.18828E−01 A8 = −1.71870E−02−5.97881E−02 −6.68341E−01 1.46406E−01 −6.74733E−01 A10 = 6.20470E−037.86645E−02 6.32519E−01 −4.74491E−01 6.09816E−01 A12 = 3.54602E−03−1.47308E−10 9.49563E−01 3.13487E−01 6.72829E−03 A14 = −1.47630E+00−1.39652E−01 −7.80642E−01 Surface # 7 8 9 10 11 k = −9.30969E−013.00000E+00 7.51760E−01 −1.69890E+00 −1.53370E+00 A4 = −1.95465E−01−1.20782E−01 −7.31012E−02 2.87498E−01 9.98483E−02 A6 = 1.88573E−01−4.42803E−02 −8.72535E−02 −6.30785E−01 −1.95914E−01 A8 = −1.83060E−018.86399E−02 3.57762E−02 7.00692E−01 1.99956E−01 A10 = 9.65919E−02−5.43961E−02 2.91774E−03 −4.93787E−01 −1.33804E−01 A12 = −1.44797E−01−4.33372E−02 9.81419E−03 2.77554E−01 6.01517E−02 A14 = 4.53123E−025.09685E−02 3.40623E−03 −8.36280E−02 −1.15447E−02 Surface # 12 13 14 15k = −3.21641E+00 −8.49803E+00 5.00000E+00 −5.75493E+00 A4 = −1.37547E−019.45821E−03 −1.11584E−01 −5.40248E−02 A6 = 1.12017E−01 −2.40883E−023.01383E−02 1.52886E−02 A8 = −5.03326E−02 6.33591E−02 −3.80918E−03−3.71527E−03 A10 = 8.37951E−03 −4.48417E−02 3.55656E−04 5.56196E−04 A12= −8.64107E−04 1.24302E−02 9.70251E−05 −4.88335E−05 A14 = 1.17849E−04−1.20879E−03 −2.34195E−05 1.83940E−06

In the image lens assembly system according to the 3rd embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 3rd embodiment. Moreover,these parameters can be calculated from Table 5 and Table 6 as thefollowing values and satisfy the following relationships:

f (mm) 3.24 f7/f −0.56 Fno 2.20 f/f12 0.74 HFOV (deg.) 42.4 f/f2 + f/f41.44 V5/V6 0.38 Td (mm) 3.833 T12/f 0.035 ΣCT/Td 0.76 |(R9 − R10)/(R9 +R10)| 0.23 TTL/ImgH 1.64 R14/|R13| 0.00 FOV (deg.) 84.8

4th Embodiment

FIG. 7 is a schematic view of an image lens assembly system according tothe 4th embodiment of the present disclosure. FIG. 8 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 4th embodiment. In FIG. 7,the image lens assembly system includes, in order from an object side toan image side, a first lens element 410, a second lens element 420, anaperture stop 400, a third lens element 430, a fourth lens element 440,a fifth lens element 450, a sixth lens element 460, a seventh lenselement 470, an IR-cut filter 490, an image plane 480, and an imagesensor 405.

The first lens element 410 made of plastic material has negativerefractive power. The first lens element 410 has a convex object-sidesurface 411 and a concave image-side surface 412, and both theobject-side surface 411 and the image-side surface 412 thereof areaspheric.

The second lens element 420 made of plastic material has positiverefractive power. The second lens element 420 has a convex object-sidesurface 421 and a concave image-side surface 422, and both theobject-side surface 421 and the image-side surface 422 thereof areaspheric.

The third lens element 430 made of plastic material has negativerefractive power. The third lens element 430 has a convex object-sidesurface 431 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 432 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 431 and the image-side surface 432 of the thirdlens element 430 are aspheric.

The fourth lens element 440 made of plastic material has positiverefractive power. The fourth lens element 440 has a convex object-sidesurface 441 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 442 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 441 and the image-side surface 442 of the fourthlens element 440 are aspheric.

The fifth lens element 450 made of plastic material has negativerefractive power. The fifth lens element 450 has a concave object-sidesurface 451 and a convex image-side surface 452, and both theobject-side surface 451 and the image-side surface 452 thereof areaspheric.

The sixth lens element 460 made of plastic material has positiverefractive power. The sixth lens element 460 has a convex object-sidesurface 461 and a convex image-side surface 462, and both theobject-side surface 461 and the image-side surface 462 thereof areaspheric.

The seventh lens element 470 made of plastic material has negativerefractive power. The seventh lens element 470 has a concave object-sidesurface 471, and has a concave image-side surface 472 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 471 and the image-side surface 472 of the seventhlens element 470 are aspheric.

The IR-cut filter 490 made of glass material is located between theseventh lens element 470 and the image plane 480, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 4th embodiment are shown in Table 7,and the aspheric surface data are shown in Table 8 below.

TABLE 7 4th Embodiment f = 3.35 mm, Fno = 2.20, HFOV = 44.2 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 4.214200 (ASP) 0.329 Plastic 1.544 55.9−19.74 2 2.943450 (ASP) 0.080 3 Lens 2 2.460420 (ASP) 0.384 Plastic1.544 55.9 5.41 4 14.121200 (ASP) 0.012 5 Ape. Stop Plano 0.163 6 Lens 32.236520 (ASP) 0.240 Plastic 1.634 23.8 −20.13 7 1.823770 (ASP) 0.208 8Lens 4 7.796900 (ASP) 0.773 Plastic 1.544 55.9 3.36 9 −2.302230 (ASP)0.298 10 Lens 5 −0.728320 (ASP) 0.288 Plastic 1.634 23.8 −3.92 11−1.187800 (ASP) 0.030 12 Lens 6 3.319500 (ASP) 0.700 Plastic 1.530 55.81.82 13 −1.264190 (ASP) 0.202 14 Lens 7 −186.448300 (ASP) 0.424 Plastic1.530 55.8 −1.88 15 1.001310 (ASP) 0.700 16 IR-cut filter Plano 0.150Glass 1.516 64.1 — 17 Plano 0.433 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 8 Aspheric Coefficients Surface # 1 2 3 4 6 k = −5.05854E+00−1.38007E+01 −7.59254E+00 −2.00000E+01 −7.44068E+00 A4 = −1.23255E−02−3.22732E−02 −3.22045E−02 −6.86343E−02 −1.85173E−01 A6 = 7.70529E−042.70887E−02 1.30369E−01 −3.10218E−02 1.70456E−01 A8 = 7.09586E−03−3.50330E−02 −3.72286E−01 1.15505E−01 −3.48762E−01 A10 = 8.90748E−031.14508E−01 3.27617E−01 −2.33483E−01 2.52156E−01 A12 = −3.11243E−033.03482E−10 3.32816E−01 1.09875E−01 2.35822E−03 A14 = −4.27632E−01−4.04522E−02 −2.26124E−01 Surface # 7 8 9 10 11 k = −3.60919E+003.00000E+00 3.72475E−01 −1.51861E+00 −1.92807E+00 A4 = −1.59191E−01−4.46198E−02 −4.26839E−02 2.30820E−01 8.51722E−02 A6 = 1.16297E−01−1.85593E−02 −4.20463E−02 −3.79310E−01 −1.15248E−01 A8 = −1.12696E−013.58744E−02 1.27154E−02 3.61408E−01 1.05495E−01 A10 = 3.50754E−02−2.99070E−02 −3.52235E−03 −2.10044E−01 −5.64200E−02 A12 = −2.03570E−02−1.76946E−02 3.49338E−03 9.70960E−02 2.07635E−02 A14 = −5.77217E−031.71898E−02 1.27900E−03 −2.38381E−02 −3.55857E−03 Surface # 12 13 14 15k = −3.07221E+00 −7.43426E+00 −1.00000E+00 −6.01722E+00 A4 =−1.03673E−01 9.61676E−03 −8.46158E−02 −4.51025E−02 A6 = 7.00659E−02−1.30314E−02 1.94713E−02 1.11753E−02 A8 = −2.66557E−02 3.25775E−02−1.91902E−03 −2.17545E−03 A10 = 4.01634E−03 −1.90280E−02 1.56851E−042.27260E−04 A12 = −3.93497E−04 4.36138E−03 3.17822E−05 −1.41643E−05 A14= 3.11161E−05 −3.54236E−04 −7.05826E−06 4.96442E−07

In the image lens assembly system according to the 4th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 4th embodiment. Moreover,these parameters can be calculated from Table 7 and Table 8 as thefollowing values and satisfy the following relationships:

f (mm) 3.35 f7/f −0.56 Fno 2.20 f/f12 0.43 HFOV (deg.) 44.2 f/f2 + f/f41.62 V5/V6 0.43 Td (mm) 4.131 T12/f 0.024 ΣCT/Td 0.76 |(R9 − R10)/(R9 +R10)| 0.24 TTL/ImgH 1.63 R14/|R13| 0.01 FOV (deg.) 88.4

5th Embodiment

FIG. 9 is a schematic view of an image lens assembly system according tothe 5th embodiment of the present disclosure. FIG. 10 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 5th embodiment. In FIG. 9,the image lens assembly system includes, in order from an object side toan image side, an aperture stop 500, a first lens element 510, a secondlens element 520, a third lens element 530, a fourth lens element 540, afifth lens element 550, a sixth lens element 560, a seventh lens element570, an IR-cut filter 590, an image plane 580, and an image sensor 505.The aperture stop 500 is located between an object and the first lenselement 510 as a front stop.

The first lens element 510 made of plastic material has negativerefractive power. The first lens element 510 has a convex object-sidesurface 511 and a concave image-side surface 512, and both theobject-side surface 511 and the image-side surface 512 thereof areaspheric.

The second lens element 520 made of plastic material has positiverefractive power. The second lens element 520 has a convex object-sidesurface 521 and a convex image-side surface 522, and both theobject-side surface 521 and the image-side surface 522 thereof areaspheric.

The third lens element 530 made of plastic material has negativerefractive power. The third lens element 530 has a concave object-sidesurface 531 changing from concave at a paraxial region to convex at aperipheral region, and has a concave image-side surface 532 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 531 and the image-side surface 532 of the thirdlens element 530 are aspheric.

The fourth lens element 540 made of plastic material has positiverefractive power. The fourth lens element 540 has a convex object-sidesurface 541 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 542. Both theobject-side surface 541 and the image-side surface 542 of the fourthlens element 540 are aspheric.

The fifth lens element 550 made of plastic material has negativerefractive power. The fifth lens element 550 has a concave object-sidesurface 551 and a convex image-side surface 552, and both theobject-side surface 551 and the image-side surface 552 thereof areaspheric.

The sixth lens element 560 made of plastic material has positiverefractive power. The sixth lens element 560 has a concave object-sidesurface 561 and a convex image-side surface 562, and both theobject-side surface 561 and the image-side surface 562 thereof areaspheric.

The seventh lens element 570 made of plastic material has negativerefractive power. The seventh lens element 570 has a concave object-sidesurface 571, and has a concave image-side surface 572 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 571 and the image-side surface 572 of the seventhlens element 570 are aspheric.

The IR-cut filter 590 made of glass material is located between theseventh lens element 570 and the image plane 580, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 5th embodiment are shown in Table 9,and the aspheric surface data are shown in Table 10 below.

TABLE 9 5th Embodiment f = 5.14 mm, Fno = 2.15, HFOV = 37.5 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.217 2 Lens 1 2.716210 (ASP)0.260 Plastic 1.640 23.3 −19.69 3 2.151010 (ASP) 0.103 4 Lens 2 2.277860(ASP) 0.986 Plastic 1.535 56.3 3.80 5 −15.805900 (ASP) 0.254 6 Lens 3−35.260900 (ASP) 0.465 Plastic 1.640 23.3 −7.50 7 5.581400 (ASP) 0.348 8Lens 4 8.056500 (ASP) 0.605 Plastic 1.544 55.9 7.33 9 −7.688000 (ASP)0.325 10 Lens 5 −1.684510 (ASP) 0.320 Plastic 1.640 23.3 −22.09 11−2.054210 (ASP) 0.050 12 Lens 6 −96.572600 (ASP) 0.552 Plastic 1.53556.3 3.80 13 −1.994410 (ASP) 0.327 14 Lens 7 −15.631600 (ASP) 0.838Plastic 1.535 56.3 −2.73 15 1.642430 (ASP) 0.800 16 IR-cut filter Plano0.200 Glass 1.516 64.1 — 17 Plano 0.504 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 10 Aspheric Coefficients Surface # 2 3 4 5 6 k = −6.94307E+00−8.14898E+00 −5.17435E+00 −1.00000E+00 5.00000E+00 A4 = 4.22104E−031.39545E−04 −1.99725E−02 −4.26316E−02 −8.41662E−02 A6 = 8.18256E−038.94243E−03 3.18270E−02 1.32633E−04 4.43291E−02 A8 = −3.62816E−03−3.88932E−03 −3.03093E−02 4.11359E−03 −3.09328E−02 A10 = −1.93304E−041.41567E−03 1.18767E−02 −9.59248E−03 1.64999E−02 A12 = 2.80938E−04−3.65430E−04 4.04056E−04 5.85395E−03 −5.11371E−03 A14 = −1.51237E−03−1.38569E−03 7.32908E−04 Surface # 7 8 9 10 11 k = −2.16226E+00−1.00000E+00 −1.54980E+01 −1.99409E+00 −2.32490E+00 A4 = −6.27225E−02−2.88931E−02 3.11743E−03 1.08699E−01 3.61596E−02 A6 = 3.20621E−02−9.55481E−03 −2.02378E−02 −8.35968E−02 −2.70048E−02 A8 = −1.39033E−023.69341E−03 3.30187E−03 4.29345E−02 1.27475E−02 A10 = 3.77507E−03−1.22723E−03 1.79869E−04 −1.53165E−02 −3.94726E−03 A12 = −9.82407E−04−3.32053E−04 1.99280E−05 3.52109E−03 7.97045E−04 A14 = 1.60044E−041.55299E−04 −2.07325E−05 −3.86084E−04 −6.93300E−05 Surface # 12 13 14 15k = −1.00000E+00 −6.70032E+00 −1.00000E+01 −6.56116E+00 A4 =−3.72783E−02 −6.14237E−03 −3.17134E−02 −1.96973E−02 A6 = 1.39695E−021.04363E−04 2.82142E−03 2.81696E−03 A8 = −2.98708E−03 4.00709E−031.22184E−05 −3.51826E−04 A10 = 3.54044E−04 −1.31020E−03 2.92989E−052.71673E−05 A12 = −3.32583E−06 1.63771E−04 3.22859E−07 −1.38977E−06 A14= −3.15763E−06 −7.55243E−06 −4.49773E−07 3.37955E−08

In the image lens assembly system according to the 5th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 5th embodiment. Moreover,these parameters can be calculated from Table 9 and Table 10 as thefollowing values and satisfy the following relationships:

f (mm) 5.14 f7/f −0.53 Fno 2.15 f/f12 1.06 HFOV (deg.) 37.5 f/f2 + f/f42.06 V5/V6 0.41 Td (mm) 5.433 T12/f 0.020 ΣCT/Td 0.74 |(R9 − R10)/(R9 +R10)| 0.10 TTL/ImgH 1.72 R14/|R13| 0.11 FOV (deg.) 75.0

6th Embodiment

FIG. 11 is a schematic view of an image lens assembly system accordingto the 6th embodiment of the present disclosure. FIG. 12 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 6th embodiment. In FIG. 11,the image lens assembly system includes, in order from an object side toan image side, an aperture stop 600, a first lens element 610, a secondlens element 620, a third lens element 630, a fourth lens element 640, afifth lens element 650, a sixth lens element 660, a seventh lens element670, an IR-cut filter 690, an image plane 680, and an image sensor 605.The aperture stop 600 is located between an object and the first lenselement 610 as a front stop.

The first lens element 610 made of plastic material has negativerefractive power. The first lens element 610 has a convex object-sidesurface 611 and a concave image-side surface 612, and both theobject-side surface 611 and the image-side surface 612 thereof areaspheric.

The second lens element 620 made of plastic material has positiverefractive power. The second lens element 620 has a convex object-sidesurface 621 and a convex image-side surface 622, and both theobject-side surface 621 and the image-side surface 622 thereof areaspheric.

The third lens element 630 made of plastic material has negativerefractive power. The third lens element 630 has a concave object-sidesurface 631 changing from concave at a paraxial region to convex at aperipheral region, and has a concave image-side surface 632 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 631 and the image-side surface 632 of the thirdlens element 630 are aspheric.

The fourth lens element 640 made of plastic material has positiverefractive power. The fourth lens element 640 has a convex object-sidesurface 641 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 642. Both theobject-side surface 641 and the image-side surface 642 of the fourthlens element 640 are aspheric.

The fifth lens element 650 made of plastic material has negativerefractive power. The fifth lens element 650 has a concave object-sidesurface 651 and a convex image-side surface 652, and both theobject-side surface 651 and the image-side surface 652 thereof areaspheric.

The sixth lens element 660 made of plastic material has positiverefractive power. The sixth lens element 660 has a concave object-sidesurface 661 and a convex image-side surface 662, and both theobject-side surface 661 and the image-side surface 662 thereof areaspheric.

The seventh lens element 670 made of plastic material has negativerefractive power. The seventh lens element 670 has a concave object-sidesurface 671, and has a concave image-side surface 672 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 671 and the image-side surface 672 of the seventhlens element 670 are aspheric.

The IR-cut filter 690 made of glass material is located between theseventh lens element 670 and the image plane 680, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 6th embodiment are shown in Table 11,and the aspheric surface data are shown in Table 12 below.

TABLE 11 6th Embodiment f = 5.20 mm, Fno = 2.20, HFOV = 37.2 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.217 2 Lens 1 2.671740 (ASP)0.260 Plastic 1.640 23.3 −20.44 3 2.134280 (ASP) 0.112 4 Lens 2 2.273620(ASP) 0.990 Plastic 1.535 56.3 3.69 5 −12.672700 (ASP) 0.310 6 Lens 3−8.106400 (ASP) 0.469 Plastic 1.640 23.3 −6.71 7 9.338400 (ASP) 0.312 8Lens 4 7.333200 (ASP) 0.591 Plastic 1.544 55.9 7.36 9 −8.577000 (ASP)0.339 10 Lens 5 −1.811810 (ASP) 0.336 Plastic 1.640 23.3 −33.40 11−2.122900 (ASP) 0.050 12 Lens 6 −96.572600 (ASP) 0.537 Plastic 1.53556.3 3.91 13 −2.052040 (ASP) 0.321 14 Lens 7 −13.965600 (ASP) 0.816Plastic 1.535 56.3 −2.69 15 1.633240 (ASP) 0.800 16 IR-cut filter Plano0.200 Glass 1.516 64.1 — 17 Plano 0.522 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 12 Aspheric Coefficients Surface # 2 3 4 5 6 k = −6.72391E+00−7.93836E+00 −4.82263E+00 −1.00000E+00 −1.78425E+01 A4 = 5.89055E−033.41975E−03 −2.10063E−02 −4.26244E−02 −8.41652E−02 A6 = 8.37979E−038.93246E−03 3.05839E−02 −3.44627E−03 4.44625E−02 A8 = −4.73178E−03−6.05534E−03 −2.96620E−02 5.44796E−03 −3.06127E−02 A10 = 7.13033E−052.04663E−03 1.11528E−02 −9.89224E−03 1.65974E−02 A12 = 2.80938E−04−3.65430E−04 4.04056E−04 5.85395E−03 −5.09214E−03 A14 = −1.51237E−03−1.38569E−03 7.32908E−04 Surface # 7 8 9 10 11 k = −8.64883E−01−1.00000E+00 −2.00000E+01 −1.88282E+00 −2.41793E+00 A4 = −6.25474E−02−3.05721E−02 5.51924E−03 1.08246E−01 3.59674E−02 A6 = 3.26241E−02−9.61223E−03 −2.07962E−02 −8.37136E−02 −2.74465E−02 A8 = −1.38002E−023.55155E−03 3.36547E−03 4.27394E−02 1.25947E−02 A10 = 3.84785E−03−1.18542E−03 1.61109E−04 −1.53714E−02 −3.96363E−03 A12 = −9.94127E−04−3.18188E−04 1.67176E−05 3.51760E−03 8.00038E−04 A14 = 1.58774E−041.48513E−04 −2.23509E−05 −3.78145E−04 −6.72732E−05 Surface # 12 13 14 15k = −1.00000E+00 −7.15590E+00 −1.36813E−01 −6.59361E+00 A4 =−3.59634E−02 −6.25905E−03 −3.02949E−02 −1.97049E−02 A6 = 1.37844E−021.47369E−04 2.65203E−03 2.82468E−03 A8 = −2.99095E−03 3.98427E−032.28052E−05 −3.50784E−04 A10 = 3.49422E−04 −1.30964E−03 2.98654E−052.64610E−05 A12 = −3.23093E−06 1.63932E−04 4.58361E−07 −1.30249E−06 A14= −3.04845E−06 −7.54823E−06 −4.77717E−07 3.02317E−08

In the image lens assembly system according to the 6th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 6th embodiment. Moreover,these parameters can be calculated from Table 11 and Table 12 as thefollowing values and satisfy the following relationships:

f (mm) 5.20 f7/f −0.52 Fno 2.20 f/f12 1.12 HFOV (deg.) 37.2 f/f2 + f/f42.12 V5/V6 0.41 Td (mm) 5.443 T12/f 0.022 ΣCT/Td 0.73 |(R9 − R10)/(R9 +R10)| 0.08 TTL/ImgH 1.72 R14/|R13| 0.12 FOV (deg.) 74.4

7th Embodiment

FIG. 13 is a schematic view of an image lens assembly system accordingto the 7th embodiment of the present disclosure. FIG. 14 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 7th embodiment. In FIG. 13,the image lens assembly system includes, in order from an object side toan image side, an aperture stop 700, a first lens element 710, a secondlens element 720, a third lens element 730, a fourth lens element 740, afifth lens element 750, a sixth lens element 760, a seventh lens element770, an IR-cut filter 790, an image plane 780, and an image sensor 705.The aperture stop 700 is located between an object and the first lenselement 710 as a front stop.

The first lens element 710 made of plastic material has negativerefractive power. The first lens element 710 has a convex object-sidesurface 711 and a concave image-side surface 712, and both theobject-side surface 711 and the image-side surface 712 thereof areaspheric.

The second lens element 720 made of plastic material has positiverefractive power. The second lens element 720 has a convex object-sidesurface 721 and a convex image-side surface 722, and both theobject-side surface 721 and the image-side surface 722 thereof areaspheric.

The third lens element 730 made of plastic material has negativerefractive power. The third lens element 730 has a concave object-sidesurface 731 changing from concave at a paraxial region to convex at aperipheral region, and has a convex image-side surface 732 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 731 and the image-side surface 732 of the third lenselement 730 are aspheric.

The fourth lens element 740 made of plastic material has positiverefractive power. The fourth lens element 740 has a convex object-sidesurface 741 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 742. Both theobject-side surface 741 and the image-side surface 742 of the fourthlens element 740 are aspheric.

The fifth lens element 750 made of plastic material has negativerefractive power. The fifth lens element 750 has a concave object-sidesurface 751 and a convex image-side surface 752, and both theobject-side surface 751 and the image-side surface 752 thereof areaspheric.

The sixth lens element 760 made of plastic material has positiverefractive power. The sixth lens element 760 has a concave object-sidesurface 761 and a convex image-side surface 762, and both theobject-side surface 761 and the image-side surface 762 thereof areaspheric.

The seventh lens element 770 made of plastic material has negativerefractive power. The seventh lens element 770 has a concave object-sidesurface 771, and has a concave image-side surface 772 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 771 and the image-side surface 772 of the seventhlens element 770 are aspheric.

The IR-cut filter 790 made of glass material is located between theseventh lens element 770 and the image plane 780, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 7th embodiment are shown in Table 13,and the aspheric surface data are shown in Table 14 below.

TABLE 13 7th Embodiment f = 5.15 mm, Fno = 2.20, HFOV = 37.3 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.214 2 Lens 1 2.570080 (ASP)0.260 Plastic 1.640 23.3 −16.56 3 1.986780 (ASP) 0.109 4 Lens 2 2.161120(ASP) 0.990 Plastic 1.535 56.3 3.51 5 −11.923600 (ASP) 0.379 6 Lens 3−4.459700 (ASP) 0.372 Plastic 1.640 23.3 −7.06 7 −351.864900 (ASP) 0.3208 Lens 4 6.343400 (ASP) 0.581 Plastic 1.544 55.9 7.77 9 −12.284200 (ASP)0.349 10 Lens 5 −1.872470 (ASP) 0.320 Plastic 1.640 23.3 −32.09 11−2.197750 (ASP) 0.050 12 Lens 6 −96.572600 (ASP) 0.534 Plastic 1.53556.3 3.94 13 −2.067680 (ASP) 0.301 14 Lens 7 −14.930600 (ASP) 0.829Plastic 1.535 56.3 −2.70 15 1.630160 (ASP) 0.800 16 IR-cut filter Plano0.200 Glass 1.516 64.1 — 17 Plano 0.475 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 14 Aspheric Coefficients Surface # 2 3 4 5 6 k = −6.98315E+00−7.44100E+00 −4.79409E+00 −1.00000E+00 −1.05906E+01 A4 = 6.28108E−034.04200E−03 −1.98815E−02 −3.62901E−02 −8.42035E−02 A6 = 8.34375E−038.02567E−03 3.10872E−02 −7.61300E−03 4.54276E−02 A8 = −5.61055E−03−6.71462E−03 −3.05136E−02 6.61852E−03 −3.03070E−02 A10 = 2.84857E−042.22911E−03 1.12996E−02 −1.00451E−02 1.68226E−02 A12 = 2.80938E−04−3.65430E−04 4.04056E−04 5.85395E−03 −5.15313E−03 A14 = −1.51237E−03−1.38569E−03 7.32908E−04 Surface # 7 8 9 10 11 k = 5.00000E+00−1.00000E+00 −2.00000E+01 −1.81336E+00 −2.64084E+00 A4 = −6.05532E−02−3.31666E−02 7.05646E−03 1.08256E−01 3.64798E−02 A6 = 3.34852E−02−9.51171E−03 −2.15858E−02 −8.36367E−02 −2.74059E−02 A8 = −1.34686E−023.31767E−03 3.33997E−03 4.26491E−02 1.25566E−02 A10 = 3.88702E−03−1.20824E−03 1.47744E−04 −1.53846E−02 −3.97264E−03 A12 = −9.82442E−04−3.10412E−04 1.46196E−05 3.51820E−03 7.99145E−04 A14 = 1.59137E−041.45176E−04 −2.35752E−05 −3.75537E−04 −6.73076E−05 Surface # 12 13 14 15k = −1.00000E+00 −7.56703E+00 4.58213E+00 −6.57759E+00 A4 = −3.54952E−02−7.56976E−03 −3.08613E−02 −1.97875E−02 A6 = 1.35910E−02 1.70535E−042.61409E−03 2.87199E−03 A8 = −3.01045E−03 3.99191E−03 3.19026E−05−3.63595E−04 A10 = 3.53923E−04 −1.30996E−03 3.18273E−05 2.74548E−05 A12= −2.68548E−06 1.64130E−04 5.26362E−07 −1.28243E−06 A14 = −3.00570E−06−7.49706E−06 −4.90720E−07 2.72669E−08

In the image lens assembly system according to the 7th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 7th embodiment. Moreover,these parameters can be calculated from Table 13 and Table 14 as thefollowing values and satisfy the following relationships:

f (mm) 5.15 f7/f −0.52 Fno 2.20 f/f12 1.12 HFOV (deg.) 37.3 f/f2 + f/f42.13 V5/V6 0.41 Td (mm) 5.394 T12/f 0.021 ΣCT/Td 0.72 |(R9 − R10)/(R9 +R10)| 0.08 TTL/ImgH 1.70 R14/|R13| 0.11 FOV (deg.) 74.6

8th Embodiment

FIG. 15 is a schematic view of an image lens assembly system accordingto the 8th embodiment of the present disclosure. FIG. 16 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 8th embodiment. In FIG. 15,the image lens assembly system includes, in order from an object side toan image side, an aperture stop 800, a first lens element 810, a secondlens element 820, a third lens element 830, a fourth lens element 840, afifth lens element 850, a sixth lens element 860, a seventh lens element870, an IR-cut filter 890, an image plane 880, and an image sensor 805.The aperture stop 800 is located between an object and the first lenselement 810 as a front stop.

The first lens element 810 made of plastic material has negativerefractive power. The first lens element 810 has a convex object-sidesurface 811 and a concave image-side surface 812, and both theobject-side surface 811 and the image-side surface 812 thereof areaspheric.

The second lens element 820 made of plastic material has positiverefractive power. The second lens element 820 has a convex object-sidesurface 821 and a convex image-side surface 822, and both theobject-side surface 821 and the image-side surface 822 thereof areaspheric.

The third lens element 830 made of plastic material has negativerefractive power. The third lens element 830 has a concave object-sidesurface 831 changing from concave at a paraxial region to convex at aperipheral region, and has a convex image-side surface 832 changing fromconvex at a paraxial region to concave at a peripheral region. Both theobject-side surface 831 and the image-side surface 832 of the third lenselement 830 are aspheric.

The fourth lens element 840 made of plastic material has positiverefractive power. The fourth lens element 840 has a convex object-sidesurface 841 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 842 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 841 and the image-side surface 842 of the fourthlens element 840 are aspheric.

The fifth lens element 850 made of plastic material has negativerefractive power. The fifth lens element 850 has a concave object-sidesurface 851 and a convex image-side surface 852, and both theobject-side surface 851 and the image-side surface 852 thereof areaspheric.

The sixth lens element 860 made of plastic material has positiverefractive power. The sixth lens element 860 has a convex object-sidesurface 861 and a convex image-side surface 862, and both theobject-side surface 861 and the image-side surface 862 thereof areaspheric.

The seventh lens element 870 made of plastic material has negativerefractive power. The seventh lens element 870 has a concave object-sidesurface 871, and has a concave image-side surface 872 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 871 and the image-side surface 872 of the seventhlens element 870 are aspheric.

The IR-cut filter 890 made of glass material is located between theseventh lens element 870 and the image plane 880, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 8th embodiment are shown in Table 15,and the aspheric surface data are shown in Table 16 below.

TABLE 15 8th Embodiment f = 5.25 mm, Fno = 2.30, HFOV = 36.8 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Ape. Stop Plano −0.200 2 Lens 1 2.602310 (ASP)0.260 Plastic 1.640 23.3 −16.52 3 2.006680 (ASP) 0.106 4 Lens 2 2.201500(ASP) 0.990 Plastic 1.535 56.3 3.53 5 −11.146300 (ASP) 0.346 6 Lens 3−4.722800 (ASP) 0.321 Plastic 1.640 23.3 −8.20 7 −48.549100 (ASP) 0.4148 Lens 4 4.933800 (ASP) 0.484 Plastic 1.544 55.9 10.80 9 29.673600 (ASP)0.446 10 Lens 5 −1.969800 (ASP) 0.325 Plastic 1.640 23.3 −32.54 11−2.315710 (ASP) 0.050 12 Lens 6 20.014100 (ASP) 0.602 Plastic 1.535 56.33.67 13 −2.154160 (ASP) 0.280 14 Lens 7 −10.676300 (ASP) 0.815 Plastic1.535 56.3 −2.62 15 1.657620 (ASP) 0.800 16 IR-cut filter Plano 0.200Glass 1.516 64.1 — 17 Plano 0.452 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 16 Aspheric Coefficients Surface # 2 3 4 5 6 k = −6.87197E+00−7.05125E+00 −4.21527E+00 −1.00000E+00 −1.50316E+01 A4 = 5.76444E−036.82854E−03 −1.88124E−02 −3.45663E−02 −8.58122E−02 A6 = 6.77836E−037.44529E−03 3.15585E−02 −8.80378E−03 4.54720E−02 A8 = −5.79508E−03−7.97931E−03 −2.97162E−02 8.07313E−03 −2.90295E−02 A10 = 6.34620E−042.88554E−03 1.07777E−02 −1.03488E−02 1.67409E−02 A12 = 2.80938E−04−3.65430E−04 4.04056E−04 5.76922E−03 −5.10758E−03 A14 = −1.51237E−03−1.38569E−03 7.12025E−04 Surface # 7 8 9 10 11 k = −2.00000E+01−1.00000E+00 −2.00000E+01 −1.68151E+00 −3.54191E+00 A4 = −6.16598E−02−3.80057E−02 −1.07876E−03 1.08364E−01 3.49958E−02 A6 = 3.37248E−02−1.18302E−02 −2.20889E−02 −8.35851E−02 −2.83550E−02 A8 = −1.34429E−022.88834E−03 3.73994E−03 4.22824E−02 1.24576E−02 A10 = 4.19445E−03−9.37494E−04 6.00516E−05 −1.53970E−02 −3.97761E−03 A12 = −9.36374E−04−3.00913E−04 −1.46197E−06 3.52483E−03 7.97191E−04 A14 = 1.36346E−041.17673E−04 −1.99974E−05 −3.71131E−04 −6.50600E−05 Surface # 12 13 14 15k = −1.00000E+00 −8.38180E+00 −1.00000E+01 −6.97864E+00 A4 =−3.35904E−02 −7.29355E−03 −2.91808E−02 −1.83533E−02 A6 = 1.34242E−02−3.61728E−05 2.57097E−03 2.64594E−03 A8 = −3.19153E−03 3.98074E−032.85784E−05 −3.47795E−04 A10 = 3.46155E−04 −1.30863E−03 3.07096E−052.83190E−05 A12 = −7.73141E−07 1.64216E−04 4.61581E−07 −1.42720E−06 A14= −2.53248E−06 −7.50878E−06 −4.87540E−07 3.16084E−08

In the image lens assembly system according to the 8th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 8th embodiment. Moreover,these parameters can be calculated from Table 15 and Table 16 as thefollowing values and satisfy the following relationships:

f (mm) 5.25 f7/f −0.50 Fno 2.30 f/f12 1.13 HFOV (deg.) 36.8 f/f2 + f/f41.97 V5/V6 0.41 Td (mm) 5.439 T12/f 0.020 ΣCT/Td 0.70 |(R9 − R10)/(R9 +R10)| 0.08 TTL/ImgH 1.71 R14/|R13| 0.16 FOV (deg.) 73.6

9th Embodiment

FIG. 17 is a schematic view of an image lens assembly system accordingto the 9th embodiment of the present disclosure. FIG. 18 shows sphericalaberration curves, astigmatic field curves and a distortion curve of theimage lens assembly system according to the 9th embodiment. In FIG. 17,the image lens assembly system includes, in order from an object side toan image side, an aperture stop 900, a first lens element 910, a secondlens element 920, a third lens element 930, a fourth lens element 940, afifth lens element 950, a sixth lens element 960, a seventh lens element970, an IR-cut filter 990, an image plane 980, and an image sensor 905.The aperture stop 900 is located between an object and the first lenselement 910 as a front stop.

The first lens element 910 made of plastic material has negativerefractive power. The first lens element 910 has a convex object-sidesurface 911 and a concave image-side surface 912, and both theobject-side surface 911 and the image-side surface 912 thereof areaspheric.

The second lens element 920 made of plastic material has positiverefractive power. The second lens element 920 has a convex object-sidesurface 921 and a convex image-side surface 922, and both theobject-side surface 921 and the image-side surface 922 thereof areaspheric.

The third lens element 930 made of plastic material has negativerefractive power. The third lens element 930 has a concave object-sidesurface 931 changing from concave at a paraxial region to convex at aperipheral region, and has a concave image-side surface 932 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 931 and the image-side surface 932 of the thirdlens element 930 are aspheric.

The fourth lens element 940 made of plastic material has positiverefractive power. The fourth lens element 940 has a convex object-sidesurface 941 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 942. Both theobject-side surface 941 and the image-side surface 942 of the fourthlens element 940 are aspheric.

The fifth lens element 950 made of plastic material has positiverefractive power. The fifth lens element 950 has a concave object-sidesurface 951 and a convex image-side surface 952, and both theobject-side surface 951 and the image-side surface 952 thereof areaspheric.

The sixth lens element 960 made of plastic material has positiverefractive power. The sixth lens element 960 has a concave object-sidesurface 961 and a convex image-side surface 962, and both theobject-side surface 961 and the image-side surface 962 thereof areaspheric.

The seventh lens element 970 made of plastic material has negativerefractive power. The seventh lens element 970 has a concave object-sidesurface 971, and has a concave image-side surface 972 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 971 and the image-side surface 972 of the seventhlens element 970 are aspheric.

The IR-cut filter 990 made of glass material is located between theseventh lens element 970 and the image plane 980, and will not affect afocal length of the image lens assembly system.

The detailed optical data of the 9th embodiment are shown in Table 17,and the aspheric surface data are shown in Table 18 below.

TABLE 17 9th Embodiment f = 5.30 mm, Fno = 2.30, HFOV = 36.6 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 3 Ape. Stop Plano −0.213 1 Lens 1 2.524870 (ASP)0.266 Plastic 1.640 23.3 −19.98 2 2.021730 (ASP) 0.109 4 Lens 2 2.273870(ASP) 0.990 Plastic 1.544 55.9 3.55 5 −10.957200 (ASP) 0.375 6 Lens 3−4.942700 (ASP) 0.335 Plastic 1.640 23.3 −6.52 7 27.457400 (ASP) 0.290 8Lens 4 7.891000 (ASP) 0.507 Plastic 1.544 55.9 8.74 9 −11.702700 (ASP)0.397 10 Lens 5 −2.058580 (ASP) 0.439 Plastic 1.640 23.3 37.30 11−2.052790 (ASP) 0.050 12 Lens 6 −87.684300 (ASP) 0.535 Plastic 1.53556.3 4.95 13 −2.574080 (ASP) 0.365 14 Lens 7 −11.322400 (ASP) 0.762Plastic 1.535 56.3 −2.84 15 1.794250 (ASP) 0.800 16 IR-cut filter Plano0.200 Glass 1.516 64.1 — 17 Plano 0.518 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 18 Aspheric Coefficients Surface # 2 3 4 5 6 k = −6.06567E+00−6.80506E+00 −4.11270E+00 −1.00000E+00 −1.52317E+01 A4 = 6.80017E−038.41851E−03 −1.84678E−02 −3.52489E−02 −8.81932E−02 A6 = 5.97603E−037.84999E−03 3.13319E−02 −1.08428E−02 4.46724E−02 A8 = −5.00728E−03−7.80177E−03 −2.81315E−02 1.01340E−02 −2.85164E−02 A10 = 9.17729E−062.59215E−03 1.00096E−02 −1.09824E−02 1.69255E−02 A12 = 3.34753E−04−4.20812E−04 5.31783E−04 5.70251E−03 −5.13375E−03 A14 = −1.51237E−03−1.34121E−03 7.11682E−04 Surface # 7 8 9 10 11 k = −2.00000E+01−1.00000E+00 −2.00000E+01 −1.71719E+00 −4.19307E+00 A4 = −6.16177E−02−3.77505E−02 2.04709E−03 1.09432E−01 3.62964E−02 A6 = 3.41827E−02−1.00036E−02 −2.12307E−02 −8.36136E−02 −2.92374E−02 A8 = −1.37313E−022.85817E−03 4.28102E−03 4.18768E−02 1.21572E−02 A10 = 4.18540E−03−7.66341E−04 8.70390E−05 −1.54969E−02 −3.99920E−03 A12 = −8.70722E−04−3.10377E−04 −3.39780E−06 3.51972E−03 7.99213E−04 A14 = 1.46881E−041.35477E−04 −2.10613E−05 −3.60205E−04 −6.28674E−05 Surface # 12 13 14 15k = −1.00000E+00 −4.58629E+00 −1.00000E+01 −6.28291E+00 A4 =−3.30987E−02 −3.67583E−03 −2.66690E−02 −2.06644E−02 A6 = 1.41216E−026.29184E−07 2.51062E−03 3.14483E−03 A8 = −3.13984E−03 3.97852E−03−1.58549E−05 −4.02074E−04 A10 = 3.41283E−04 −1.30789E−03 2.54945E−053.11295E−05 A12 = −1.66064E−06 1.64122E−04 3.87881E−07 −1.42081E−06 A14= −3.15719E−06 −7.62266E−06 −3.84553E−07 2.73415E−08

In the image lens assembly system according to the 9th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 9th embodiment. Moreover,these parameters can be calculated from Table 17 and Table 18 as thefollowing values and satisfy the following relationships:

f (mm) 5.30 f7/f −0.54 Fno 2.30 f/f12 1.18 HFOV (deg.) 36.6 f/f2 + f/f42.10 V5/V6 0.41 Td (mm) 5.420 T12/f 0.021 ΣCT/Td 0.71 |(R9 − R10)/(R9 +R10)| 0.00 TTL/ImgH 1.72 R14/|R13| 0.16 FOV (deg.) 73.2

10th Embodiment

FIG. 19 is a schematic view of an image lens assembly system accordingto the 10th embodiment of the present disclosure. FIG. 20 showsspherical aberration curves, astigmatic field curves and a distortioncurve of the image lens assembly system according to the 10thembodiment. In FIG. 19, the image lens assembly system includes, inorder from an object side to an image side, a first lens element 1010, asecond lens element 1020, an aperture stop 1000, a third lens element1030, a fourth lens element 1040, a fifth lens element 1050, a sixthlens element 1060, a seventh lens element 1070, an IR-cut filter 1090,an image plane 1080, and an image sensor 1005.

The first lens element 1010 made of plastic material has negativerefractive power. The first lens element 1010 has a convex object-sidesurface 1011 and a concave image-side surface 1012, and both theobject-side surface 1011 and the image-side surface 1012 thereof areaspheric.

The second lens element 1020 made of plastic material has positiverefractive power. The second lens element 1020 has a convex object-sidesurface 1021 and a concave image-side surface 1022, and both theobject-side surface 1021 and the image-side surface 1022 thereof areaspheric.

The third lens element 1030 made of plastic material has positiverefractive power. The third lens element 1030 has a convex object-sidesurface 1031 changing from convex at a paraxial region to concave at aperipheral region, and has a concave image-side surface 1032 changingfrom concave at a paraxial region to convex at a peripheral region. Boththe object-side surface 1031 and the image-side surface 1032 of thethird lens element 1030 are aspheric.

The fourth lens element 1040 made of plastic material has positiverefractive power. The fourth lens element 1040 has a convex object-sidesurface 1041 changing from convex at a paraxial region to concave at aperipheral region, and has a convex image-side surface 1042 changingfrom convex at a paraxial region to concave at a peripheral region. Boththe object-side surface 1041 and the image-side surface 1042 of thefourth lens element 1040 are aspheric.

The fifth lens element 1050 made of plastic material has negativerefractive power. The fifth lens element 1050 has a concave object-sidesurface 1051 and a convex image-side surface 1052, and both theobject-side surface 1051 and the image-side surface 1052 thereof areaspheric.

The sixth lens element 1060 made of plastic material has positiverefractive power. The sixth lens element 1060 has a convex object-sidesurface 1061 and a convex image-side surface 1062, and both theobject-side surface 1061 and the image-side surface 1062 thereof areaspheric.

The seventh lens element 1070 made of plastic material has negativerefractive power. The seventh lens element 1070 has a convex object-sidesurface 1071, and has a concave image-side surface 1072 changing fromconcave at a paraxial region to convex at a peripheral region. Both theobject-side surface 1071 and the image-side surface 1072 of the seventhlens element 1070 are aspheric.

The IR-cut filter 1090 made of glass material is located between theseventh lens element 1070 and the image plane 1080, and will not affecta focal length of the image lens assembly system.

The detailed optical data of the 10th embodiment are shown in Table 19,and the aspheric surface data are shown in Table 20 below.

TABLE 19 10th Embodiment f = 3.41 mm, Fno = 2.40, HFOV = 43.7 deg.Curvature Focal Surface # Radius Thickness Material Index Abbe # length0 Object Plano Infinity 1 Lens 1 4.882900 (ASP) 0.257 Plastic 1.544 55.9−15.83 2 3.058300 (ASP) 0.080 3 Lens 2 2.222640 (ASP) 0.378 Plastic1.544 55.9 6.29 4 5.952700 (ASP) 0.038 5 Ape. Stop Plano 0.163 6 Lens 31.854800 (ASP) 0.240 Plastic 1.634 23.8 61.33 7 1.849920 (ASP) 0.218 8Lens 4 11.291600 (ASP) 0.812 Plastic 1.544 55.9 3.23 9 −2.030110 (ASP)0.229 10 Lens 5 −0.773830 (ASP) 0.366 Plastic 1.634 23.8 −3.39 11−1.431240 (ASP) 0.030 12 Lens 6 3.498100 (ASP) 0.738 Plastic 1.530 55.81.83 13 −1.247730 (ASP) 0.110 14 Lens 7 20.925200 (ASP) 0.533 Plastic1.530 55.8 −1.92 15 0.964130 (ASP) 0.700 16 IR-cut filter Plano 0.150Glass 1.516 64.1 — 17 Plano 0.525 18 Image Plano — Note: Referencewavelength (d-line) is 587.6 nm.

TABLE 20 Aspheric Coefficients Surface # 1 2 3 4 6 k = −3.57950E+00−1.18187E+01 −5.83058E+00 −2.00000E+01 −5.95059E+00 A4 = −1.15879E−02−2.48454E−02 −1.87504E−02 −9.59097E−02 −1.76350E−01 A6 = −1.15791E−033.51250E−02 1.55456E−01 2.99677E−02 1.56379E−01 A8 = 8.36407E−03−3.48093E−02 −3.62650E−01 8.73180E−02 −3.93096E−01 A10 = 1.03746E−029.68860E−02 2.92472E−01 −2.55241E−01 2.68545E−01 A12 = −3.15757E−03−7.51579E−08 3.32816E−01 1.09875E−01 2.35814E−03 A14 = −4.27632E−01−4.04522E−02 −2.26124E−01 Surface # 7 8 9 10 11 k = −2.85888E+00−7.52580E+00 3.98278E−01 −1.46248E+00 −1.78164E+00 A4 = −1.64415E−01−4.51427E−02 −3.54970E−02 2.25983E−01 8.44047E−02 A6 = 8.82861E−02−1.29082E−02 −4.34760E−02 −3.80811E−01 −1.14822E−01 A8 = −1.15832E−013.55455E−02 9.87332E−03 3.61099E−01 1.05642E−01 A10 = 4.99876E−02−2.82721E−02 −3.04876E−03 −2.09491E−01 −5.63719E−02 A12 = −2.03570E−02−1.75580E−02 3.84665E−03 9.72259E−02 2.07897E−02 A14 = −5.77218E−031.71898E−02 1.28611E−03 −2.35294E−02 −3.54294E−03 Surface # 12 13 14 15k = −2.12199E+00 −6.66059E+00 −1.00000E+00 −5.48675E+00 A4 =−1.03624E−01 1.59413E−02 −8.44815E−02 −4.46670E−02 A6 = 6.88251E−02−1.36101E−02 1.98136E−02 1.11491E−02 A8 = −2.58817E−02 3.25223E−02−2.04402E−03 −2.16933E−03 A10 = 3.94339E−03 −1.90465E−02 1.55735E−042.27480E−04 A12 = −3.72738E−04 4.36017E−03 3.26989E−05 −1.19224E−05 A14= 2.60813E−05 −3.53230E−04 −7.30170E−06 2.42933E−07

In the image lens assembly system according to the 10th embodiment, thedefinitions of f, f12, f2, f4, f7, Fno, FOV, HFOV, V5, V6, R9, R10, R13,R14, ΣCT, T12, Td, TTL, and ImgH are the same as those stated in the 1stembodiment with corresponding values for the 10th embodiment. Moreover,these parameters can be calculated from Table 19 and Table 20 as thefollowing values and satisfy the following relationships:

f (mm) 3.41 f7/f −0.56 Fno 2.40 f/f12 0.31 HFOV (deg.) 43.7 f/f2 + f/f41.60 V5/V6 0.43 Td (mm) 4.192 T12/f 0.023 ΣCT/Td 0.79 |(R9 − R10)/(R9 +R10)| 0.30 TTL/ImgH 1.67 R14/|R13| 0.05 FOV (deg.) 87.4

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentinvention without departing from the scope or spirit of the invention.In view of the foregoing, it is intended that the present inventioncover modifications and variations of this invention provided they fallwithin the scope of the following claims.

What is claimed is:
 1. An image lens assembly system comprising, in order from an object side to an image side: a first lens element; a second lens element having positive refractive power; a third lens element; a fourth lens element; a fifth lens element; a sixth lens element having at least one of an object-side surface and an image-side surface being aspheric; and a seventh lens element with negative refractive power having a concave image-side surface, wherein the image-side surface of the seventh lens element changes from concave in a paraxial region thereof to convex in an off-axis region thereof, and at least one of an object-side surface and the image-side surface thereof is aspheric; wherein the image lens assembly system has a total of seven lens elements, there is a gap between every two adjacent lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element that are adjacent to each other, a sum of central thicknesses from the first through seventh lens elements is ΣCT, an axial distance between an object-side surface of the first lens element and the image-side surface of the seventh lens element is Td, and the following relationship is satisfied: 0.60<ΣCT/Td<0.90.
 2. The image lens assembly system of claim 1, wherein an axial distance between the object-side surface of the first lens element and an image plane is TTL, a maximum image height of the image lens assembly system is ImgH, and the following relationship is satisfied: TTL/ImgH<1.85.
 3. The image lens assembly system of claim 2, wherein a focal length of the image lens assembly system is f, a composite focal length of the first lens element and the second lens element is f12, and the following relationship is satisfied: 0.1<f/f12<1.8.
 4. The image lens assembly system of claim 3, wherein the sixth lens element has positive refractive power.
 5. The image lens assembly system of claim 2, wherein a maximal field of view of the image lens assembly system is FOV, and the following relationship is satisfied: 70 degrees<FOV<100 degrees.
 6. The image lens assembly system of claim 1, wherein the following relationship is satisfied: 0.70≦ΣCT/Td<0.90.
 7. The image lens assembly system of claim 6, wherein the following relationship is satisfied: 0.73≦ΣCT/Td<0.90.
 8. The image lens assembly system of claim 1, wherein a focal length of the image lens assembly system is f, a composite focal length of the first lens element and the second lens element is f12, and the following relationship is satisfied: 0.50<f/f12<1.35.
 9. The image lens assembly system of claim 1, wherein the fourth lens element has positive refractive power.
 10. The image lens assembly system of claim 1, wherein a curvature radius of the object-side surface of the seventh lens element is R13, a curvature radius of the image-side surface of the seventh lens element is R14, and the following relationship is satisfied: 0<R14/|R13|<0.5.
 11. The image lens assembly system of claim 10, further comprising: an aperture stop disposed between an object and the third lens element.
 12. The image lens assembly system of claim 1, wherein a focal length of the image lens assembly system is f, a focal length of the second lens element is f2, a focal length of the fourth lens element is f4, and the following relationship is satisfied: 1.4<f/f2+f/f4<2.6.
 13. The image lens assembly system of claim 1, wherein at least one of the third lens element and the fourth lens element has at least one surface changing from concave to convex or changing from convex to concave from a paraxial region thereof to a peripheral region thereof.
 14. The image lens assembly system of claim 1, wherein a focal length of the image lens assembly system is f, a focal length of the seventh lens element is f7, and the following relationship is satisfied: −0.70<f7/f<−0.30.
 15. The image lens assembly system of claim 1, wherein an Abbe number of the fifth lens element is V5, an Abbe number of the sixth lens element is V6, and the following relationship is satisfied: 0.25<V5/V6<0.60.
 16. The image lens assembly system of claim 1, wherein a curvature radius of an object-side surface of the fifth lens element is R9, a curvature radius of an image-side surface of the fifth lens element is R10, and the following relationship is satisfied: |(R9−R10)/(R9+R10)|<0.35.
 17. The image lens assembly system of claim 1, wherein the following relationship is satisfied: 3.2 mm<Td<7.0 mm.
 18. The image lens assembly system of claim 1, wherein the third lens element with negative refractive power has a concave image-side surface.
 19. The image lens assembly system of claim 1, wherein the seventh lens element has a convex object-side surface.
 20. The image lens assembly system of claim 1, wherein the second lens element has a convex object-side surface.
 21. The image lens assembly system of claim 1, wherein the fifth lens element has a convex image-side surface.
 22. The image lens assembly system of claim 1, wherein the sixth lens element has a convex image-side surface.
 23. The image lens assembly system of claim 1, wherein the first lens element has a convex object-side surface and a concave image-side surface.
 24. The image lens assembly system of claim 1, wherein further comprising: an aperture stop disposed between an object and the second lens element.
 25. An imaging device, comprising: the image lens assembly system of claim 1; and an image sensor located on an image plane of the image lens assembly system. 